NPCs composing that spawngroup :

a_hamal_skeleton (25%)

a_pulsating_bile (25%)

elementalbone_skeleton (25%)

hexbone_skeleton (25%)

NPCs spawning around that spawngroup :
(Max range : 200)

charasis_12, range=132 (12,-294,22)

elementalbone_skeleton (50%)
hexbone_skeleton (50%)

charasis_22, range=122 (6,-276,23)

charasis_23, range=93 (79,-276,22)

charasis_24, range=127 (139,-299,21)

charasis_26, range=34 (86,-217,23)

charasis_27, range=81 (12,-147,22)

a_pyre_golem (50%)
a_pyre_golem (50%)

charasis_29, range=103 (-12,-147,22)

charasis_30, range=112 (-1,-111,21)

a_pulsating_bile (50%)
hexbone_skeleton (50%)

charasis_31, range=35 (52,-170,23)

charasis_32, range=53 (52,-225,22)

charasis_33, range=115 (-28,-207,22)

charasis_110, range=185 (-17,-29,-158)

an_undead_oblation (100%)

charasis_112, range=94 (-1,-224,-194)

a_sepulcher_skeleton (100%)

charasis_173, range=96 (63,-278,-176)

charasis_174, range=103 (45,-279,-194)

greater_war_boned_skeleton (100%)

charasis_175, range=60 (25,-185,-194)

charasis_176, range=110 (-25,-185,-194)

charasis_177, range=68 (31,-225,-194)

a_sepulcher_skeleton (100%)

charasis_204, range=179 (14,-348,22)

hexbone_skeleton (100%)

charasis_209, range=51 (116,-224,23)

a_helot_spectre (100%)

charasis_Acolyte_of_Convergence000_1949931, range=158 (46,-29,4)

Acolyte_of_Convergence (100%)